Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
666566701Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
4387946872859182952392168.62018-03-06 06:01:15
History
DateUserTypeResult
2018-03-06ConductorF
Factor: 438794687285918295239 / TF: 68-69
2017-02-17sasakiNF
no factor from 2^67 to 2^68
2017-02-17NoPolarBearsHereNF
no factor from 2^67 to 2^68
2014-05-04sasakiNF
no factor from 2^66 to 2^67
2010-03-01Architects CubedNF
no factor from 2^65 to 2^66
2010-03-01Architects CubedNF
no factor from 2^64 to 2^65